Description
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None
Affected products
- ISC / BIND 99.11.0 – 9.18.50
- ISC / BIND 99.20.0 – 9.20.24
- ISC / BIND 99.21.0 – 9.21.23
- ISC / BIND 99.11.3-S1 – 9.18.50-S1
- ISC / BIND 99.20.9-S1 – 9.20.24-S1
Updated 46m ago · 8 sources